Correlation between injected power and voltage deviation at the integrating node of new energy source

In this paper, correlation analysis in probability theory is applied to the relationship study between injected power and voltage quality at the integrating node of new energy source. Based on the study of the simulation model of a wind farm accessed into distribution system, it shows that the voltage deviation of the integrating node is mainly determined by the system background normal operation status, the sizes of loads and output power of new energy source, and there is a very strong correlation between the raising voltage caused by accessing wind farms at the grid node and the power which is supplied by wind farm when the operation background of the system is under the same conditions. From the perspective of the quality constraints on voltage deviation, the method how to choose the integrating node for distributed generation is also discussed in this paper.